/*++

Copyright (c) 2005 - 2006, Intel Corporation                                                         
All rights reserved. This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
http://opensource.org/licenses/bsd-license.php                                            
                                                                                          
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 


Module Name:

  Ip4Icmp.h

Abstract:

  Header file for ICMP protocol.

--*/

#ifndef __EFI_IP4_ICMP_H__
#define __EFI_IP4_ICMP_H__

enum {
  //
  // ICMP type definations
  //
  ICMP_ECHO_REPLY           = 0,
  ICMP_DEST_UNREACHABLE     = 3,
  ICMP_SOURCE_QUENCH        = 4,
  ICMP_REDIRECT             = 5,
  ICMP_ECHO_REQUEST         = 8,
  ICMP_TIME_EXCEEDED        = 11,
  ICMP_PARAMETER_PROBLEM    = 12,
  ICMP_TIMESTAMP            = 13,
  ICMP_INFO_REQUEST         = 15,
  ICMP_INFO_REPLY           = 16,
  ICMP_TYPE_MAX             = ICMP_INFO_REPLY,

  ICMP_DEFAULT_CODE         = 0,
  
  //
  // ICMP code definations for ICMP_DEST_UNREACHABLE
  //
  ICMP_NET_UNREACHABLE      = 0,
  ICMP_HOST_UNREACHABLE     = 1,
  ICMP_PROTO_UNREACHABLE    = 2,  // Host may generate
  ICMP_PORT_UNREACHABLE     = 3,  // Host may generate
  ICMP_FRAGMENT_FAILED      = 4,
  ICMP_SOURCEROUTE_FAILED   = 5,  // Host may generate
  ICMP_NET_UNKNOWN          = 6,
  ICMP_HOST_UNKNOWN         = 7,
  ICMP_SOURCE_ISOLATED      = 8,
  ICMP_NET_PROHIBITED       = 9,
  ICMP_HOST_PROHIBITED      = 10,
  ICMP_NET_UNREACHABLE_TOS  = 11,
  ICMP_HOST_UNREACHABLE_TOS = 12,
  
  //
  // ICMP code definations for ICMP_TIME_EXCEEDED
  //
  ICMP_TIMEOUT_IN_TRANSIT   = 0,
  ICMp_TIMEOUT_REASSEMBLE   = 1,  // Host may generate
  
  //
  // ICMP code definations for ICMP_TIME_EXCEEDED
  //
  ICMP_NET_REDIRECT         = 0,
  ICMP_HOST_REDIRECT        = 1,
  ICMP_NET_TOS_REDIRECT     = 2,
  ICMP_HOST_TOS_REDIRECT    = 3,
  
  //
  // ICMP message classes, each class of ICMP message shares
  // a common message format. INVALID_MESSAGE is only a flag.
  //
  ICMP_INVALID_MESSAGE      = 0,
  ICMP_ERROR_MESSAGE        = 1,
  ICMP_QUERY_MESSAGE        = 2,
};

typedef struct {
  UINT8                   IcmpType;
  UINT8                   IcmpClass;
} IP4_ICMP_CLASS;

extern IP4_ICMP_CLASS     mIcmpClass[];
extern EFI_IP4_ICMP_TYPE  mIp4SupportedIcmp[];

EFI_STATUS
Ip4IcmpHandle (
  IN IP4_SERVICE          *IpSb,
  IN IP4_HEAD             *Header,
  IN NET_BUF              *Packet
  );
#endif
